/*
 * Copyright (c) 2010 Peter Hayes
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.envconfig.persistence;

import org.envconfig.model.AuditInfo;
import org.hibernate.envers.RevisionListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 * @author Pete
 */
public class AuditInfoListener implements RevisionListener {
    private final Logger log = LoggerFactory.getLogger(getClass());

    private static ThreadLocal<AuditInfo> auditInfoThreadLocal = new ThreadLocal<AuditInfo>();

    public static void setAuditInfo(AuditInfo auditInfo) {
        auditInfoThreadLocal.set(auditInfo);
    }

    public static void removeAuditInfo() {
        auditInfoThreadLocal.remove();
    }

    @Override
    public void newRevision(Object revisionEntity) {
        AuditInfo revAuditInfo = (AuditInfo) revisionEntity;

        AuditInfo auditInfo = auditInfoThreadLocal.get();
        if (auditInfo != null) {
            revAuditInfo.copy(auditInfo);
        } else {
            log.debug("No audit information available, unattributed change will be created");
        }
    }

}
